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A kind of silicone rubber modified styrene-butadiene rubber peelable protective coating

A technology of styrene-butadiene rubber and protective coatings, which is applied in coatings, conjugated diene coatings, etc., can solve the problems of electrical breakdown, peeling, and shrinkage of protective coatings, and achieve excellent adhesion and moderate adhesion , Overcoming the effect of easy sagging

Active Publication Date: 2020-06-16
NANJING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing strippable protective coating cannot meet the requirements when used in the above-mentioned occasions, and the protective coating has electrical breakdown, peeling, shrinkage, and even peeling off

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A. Add 100 parts by weight of thermoplastic styrene-butadiene rubber into a mixed solvent of 150 parts by weight of toluene and 30 parts by weight of xylene, and stir and mix evenly.

[0020] B. Take 1 part by weight of diphenyldimethoxysilane, 2 parts by weight of anilinomethyltriethoxysilane, 0.1 part by weight of octyltrimethoxysilane and 0.3 part by weight of butanone, and add 0.03 parts by weight after mixing water, stirred and mixed at room temperature for 0.5 hours.

[0021] C. 60 parts by weight of room temperature vulcanized silicone rubber.

[0022] Mix A, B, and C solutions evenly to prepare a silicone rubber-modified styrene-butadiene rubber peelable protective coating.

[0023] Main properties: The tensile strength of the main body is 2.4MPa, the elongation at break is 350%, and the peel strength with the aluminum substrate is 0.24kN / m. After the sample is soaked in 23°C water for 7 days and 95°C water for 1 hour, the peel strength It is 0.22kN / m and 0.20...

Embodiment 2

[0025] A. Add 100 parts by weight of thermoplastic styrene-butadiene rubber to a mixed solvent of 70 parts by weight of toluene, 70 parts by weight of xylene and 60 parts by weight of cyclohexane, and stir and mix evenly.

[0026] B. Take 2 parts by weight of diphenyldimethoxysilane, 2 parts by weight of anilinomethyltriethoxysilane, 1 part by weight of octyltrimethoxysilane and 1 part by weight of butanone, and add 0.05 parts by weight of water after mixing , stirred and mixed at room temperature for 0.5 hours.

[0027] C. 70 parts by weight of room temperature vulcanized silicone rubber.

[0028] Mix A, B, and C solutions evenly to prepare a silicone rubber-modified styrene-butadiene rubber peelable protective coating.

[0029] Main properties: The tensile strength of the main body is 2.2MPa, the elongation at break is 280%, and the peel strength with the aluminum substrate is 0.28kN / m. After the sample is soaked in 23°C water for 7 days and 95°C water for 1 hour, the The ...

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Abstract

The invention provides silicon rubber modified butadiene styrene rubber peelable protection coating. The silicon rubber modified butadiene styrene rubber peelable protection coating is prepared from the following components in parts by weight: 100 parts of thermoplastic styrene-butadiene rubber, 100 to 200 parts of solvent, 2 to 10 parts of compatibilizer and 30 to 80 parts of room-temperature vulcanized silicon rubber. The compatibilizer is prepared from phenyl siloxane and alkyl siloxane and has the effect of effectively promoting a compatible effect of the silicon rubber and the styrene-butadiene rubber. The peelable protection coating combines the body strength of the styrene-butadiene rubber and excellent binding property, electric performance and water resistance of the silicon rubber; the peelable protection coating has excellent thixotropy and does not sag after being coated; the peelable protection coating has a moderate binding force with a metal substrate and good strippingperformance; after stripping is carried out, no residues of a coating layer are formed; the coating is effectively used for partial temporary protection of various metal surfaces; especially, the coating is used for the temporary protection of metal under severe environments including micro-arc oxidization, chemical nickel plating technologies and the like.

Description

technical field [0001] The invention relates to a silicone rubber modified styrene-butadiene rubber peelable protective coating, which relates to the field of sealing coatings. Background technique [0002] Peelable protective coating is a kind of sealing coating that plays a temporary protective role. It is coated on the surface of metal and other substrates to form a layer of peelable protective coating, which forms an anti-dirty, anti-rust, anti-corrosion and It is widely used in local electroplating, micro-arc oxidation, chemical milling protection and other fields. Common peelable protective coatings include neoprene, styrene-butadiene rubber, butyl rubber, SBS thermoplastic elastomer and other types. The commercial SZS type styrene-butadiene strippable paint is made of styrene-butadiene rubber resin, plasticizer, pigment and organic solvent, and is used for the temporary protective layer of stainless steel, aluminum alloy and other metals. Patent CN 102492336B disclo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D109/06C09D7/65C09D7/63
CPCC09D7/63C09D7/65C09D109/06C08L83/04C08K5/5419C08K5/544
Inventor 全一武高文通刘甫
Owner NANJING UNIV
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